Is having lunch with a friend of the opposite sex betraying your spouse? What about telling jokes to coworkers before sharing them at home? "If you're doing any of these things, you're being emotionally unfaithful," says M. Gary Neuman, author of Emotional Infidelity. "You're effectively relocating vital marital energy into the hands of others. Forget about where it might end up. Even if you never touch this other person, you have still used another person to relate to, and in doing so, you relate away from your spouse."What do you think? Can friends really threaten your marriage? Share your opinion or read more about Neuman's stance here: